A floating cage mooring device with reserved catenary tension and its technology

Abstract

The present invention discloses a floating cage mooring device with reserved catenary tension and its process, which relates to the technical field of the installation of large offshore floating cage mooring systems. It includes a floating crane ship, a towing tugboat, an operation tugboat, a floating cage and a mooring system. The mooring system includes four sets of mooring chains. The towing tugboat is used to tow the floating cage. The towing tugboat is combined with the floating crane ship to stably tow the floating cage. The operation tugboat is used for the connection of the mooring chains and for adjusting the positions of the floating cage and the floating crane ship. Compared with the traditional process of connecting by a tugboat in the state of loose anchor chain, the present invention can ensure that the mooring chain after connection has a certain catenary tension by tensioning the steel wire to tow the anchor chain and then connecting the nylon cable and the connecting eyeplate A of the floating cage, which can guarantee the stability after the installation of the cage.

Description

Technical Field

[0001] The invention belongs to the technical field of the installation of mooring systems for large floating cages at sea, and particularly relates to a floating cage mooring device with reserved catenary tension and its technology. Background Art

[0002] With the reduction of marine fishery resources and the increase in people's demand for seafood, the marine aquaculture industry is also developing rapidly. Among them, cage aquaculture, as a major aquaculture method, occupies an important position in the culture of seawater fish in China. As a long-term floating large structure at sea, the installation of the mooring system of the floating cage is related to the stability and safety of the self-existence and operation state of the cage. Due to the relatively low construction cost of the floating cage, chain stoppers and other anchor chain tightening devices are usually not equipped, and the traditional mooring system installation technology also completes the connection with the floating cage in the state of the anchor chain being relaxed. After installation, there is not enough catenary tension in the mooring chain of the floating cage, resulting in the floating cage deviating greatly from the designed position under the influence of adverse environmental factors, and the situation of the mooring chain winding around the cage frequently occurs, generating great potential safety hazards. Therefore, an improved technology is urgently needed to solve the problems existing in the prior art. Summary of the Invention

[0003] The purpose of the invention is to provide a floating cage mooring device with reserved catenary tension and its technology to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the invention is realized through the following technical solutions:

[0005] The invention provides a floating cage mooring device with reserved catenary tension, which includes a floating crane ship, a towing tugboat, a working tugboat, a floating cage and a mooring system. The mooring system includes four sets of mooring chains. The towing tugboat is used for towing the floating cage, and the towing tugboat is combined with the floating crane ship to stably tow the floating cage. The working tugboat is used for connecting the mooring chains and adjusting the positions of the floating cage and the floating crane ship.

[0006] Further, guide wheels are respectively arranged below both ends on the side of the floating cage close to the floating crane ship. Connecting eye plates A and mooring points are arranged around the floating cage, and the guide wheels are located above the connecting eye plates A.

[0007] Further, a temporary working platform is arranged below the connecting eye plate A, and the temporary working platform is located at both ends on the side of the floating cage close to the floating crane ship.

[0008] Further, the mooring system includes a triangular plate. Anchor chains, nylon cables and floating barrels are respectively arranged on the three connecting eyes of the triangular plate. One end of the anchor chain is connected to the triangular plate, and a large holding power anchor is arranged at the other end.

[0009] Further, a temporary lifting point is provided above the guiding wheel, and a chain block is provided on the temporary lifting point. One end of the nylon cable is connected to the triangular plate, and the other end is provided with a free end connection eye B. A root for connecting to the chain block is provided on the free end connection eye B.

[0010] Further, a workboat and a main crane are provided on the floating crane ship. Cable cars and tension winches are provided on both sides of the main crane. The tension winch is located between the main crane and the cable car. A tensiometer is provided on the tension winch. One end of a tension wire A is connected to the tensiometer, and the other end of the tension wire A is detachably connected to the anchor chain near one end of the triangular plate through the guiding wheel. The cable car is connected to the mooring point through a mooring wire.

[0011] Further, a main drum winch A, an auxiliary drum winch and a shark clamp are provided on the working tugboat. The shark clamp is used to temporarily fix the anchor chain and the nylon cable.

[0012] Further, a main drum winch B is provided on the towing tugboat.

[0013] A floating cage mooring process for reserving catenary tension includes the following steps:

[0014] Step 1: The floating crane ship is positioned near the designed installation position of the floating cage. The towing tugboat tows the floating cage to the installation position, and the working tugboat drives the floating cage to slowly approach the floating crane ship.

[0015] Step 2: The floating crane ship dispatches the workboat to connect the mooring points of the floating cage to the two cable cars on the floating crane ship in sequence to complete mooring, and the towing tugboat and the floating crane ship jointly control the stability of the floating cage.

[0016] Step 3: The working tugboat picks up one of the two anchor chains far from the floating crane ship as the terminal of the first laid anchor chain, connects it to the main drum winch A through a steel wire rope, and releases the connection between the corresponding nylon cable on the connection eye plate A and the main drum winch B on the towing tugboat, and connects the released nylon cable to the auxiliary drum winch.

[0017] Step 4: The working tugboat synchronously tightens the main drum winch A and the auxiliary drum winch, pulls the ends of the anchor chain and the nylon cable to the deck, temporarily fixes them with the shark clamp, and respectively connects the anchor chain, the nylon cable and the buoy to the triangular plate. After the connection is completed, release the shark clamp, and the triangular plate and the buoy fall into the sea under the gravity traction of the anchor chain, and the first set of mooring chains is connected.

[0018] Step 5: The working tugboat picks up the other one of the two anchor chains far from the floating crane ship as the terminal of the second laid anchor chain, repeats Step 3 and Step 4 to complete the connection of the second set of mooring chains.

[0019] Step 6: The operating tugboat picks up one of the two anchor chains near the floating crane as the terminal of the third anchor chain that has been laid. The operating tugboat picks up the terminal of the third anchor chain and collects it on the deck, and respectively connects the anchor chain, nylon cable, buoy and triangle plate, wherein the other end of the nylon cable is the free end connected to eye B, and then the operating tugboat approaches the floating crane and waits;

[0020] Step 7: The main crane of the floating crane lifts the tension wire, passes the tension wire through the guide wheel on the floating cage, pulls the passed end to the deck of the operating tugboat, connects it to the chain ring near the terminal of the anchor chain through the shackle, and pulls the end connected to the main crane back to the deck of the floating crane, and then connects the tension meter and the tension winch through the shackle in turn;

[0021] Step 8: The tension winch of the floating crane is tightened to drive the tension wire, and the value displayed by the tension meter is used to determine whether the reserved tension force meets the installation design requirements. Under the action of the guide wheel, the tension wire pulls the anchor chain, nylon cable, buoy and triangle plate connected to the deck of the operating tugboat to the vicinity of the corresponding connection eye plate armor of the floating cage;

[0022] Step 9. The operator lands on the temporary working platform at the corresponding position, and uses a hand winch to pull the free end connection eye B of the nylon cable to the vicinity of the corresponding connection eye plate A of the floating cage, and completes the connection between the free end connection eye B and the connection eye plate A;

[0023] Step 10: The tension winch of the floating crane is relaxed, and the anchor chain drives the nylon cable to straighten again after the tension is removed, and the remaining catenary tension is the catenary tension value required after the floating cage is installed;

[0024] Step 11: Release the connection between the tensioning wire and the anchor chain and recycle it. At this point, the third set of mooring chain connection is completed;

[0025] Step 12: The operating tugboat picks up the other of the two anchor chains close to the floating crane as the terminal of the fourth laid anchor chain, and repeats steps 6 to 11 to complete the connection of the fourth set of mooring chains.

[0026] The present invention has the following beneficial effects:

[0027] 1. Compared with the traditional process of connecting the tugboat when the anchor chain is relaxed, the present invention uses a tensioned steel wire to pull the anchor chain and then connect the nylon cable and the connecting eye plate of the floating cage, which can ensure that the mooring chain has a certain catenary tension after the connection is completed, and can ensure the stability of the cage after installation.

[0028] 2. The floating cage is connected to the floating crane with a cable and controlled by a towing tugboat to stabilize the position of the floating cage, greatly improving the safety of the construction operation.

[0029] 3. After the towing tug of the present invention towes the floating cage to the site, it is moored stably with the floating crane by cables. The working tug picks up the terminals of two anchor chains far from the floating crane in sequence and connects them to the nylon cables on the floating cage respectively. The floating crane hoists and tightens the steel wire, which passes through the guiding wheel of the floating cage. One end is connected to the tensioning winch, and the other end is connected to the terminal link of the third anchor chain picked up by the working tug. At the same time, the connection of the anchor chain and the nylon cable is completed in advance on the deck of the working tug. Subsequently, the tensioning winch tightens, and under the action of the guiding wheel of the floating cage, the terminal of the anchor chain is towed near the connecting eye plate A. The free end connecting eye B of the nylon cable is pulled up by a chain block to complete the connection with the connecting eye plate A, and the installation of the fourth mooring chain is completed with the same process. This process enables the floating cage to have sufficient catenary tension after mooring, greatly improving the stability of the floating cage after installation.

[0030] Based on the above, the present invention can be widely promoted in the technical field of the installation of mooring systems for large offshore floating cages.

[0031] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a top view schematic diagram of the towing tug of the present invention, towing the floating cage into the site and mooring with the floating crane by cables;

[0034] Figure 2 It is a composition diagram of a single mooring chain of the self-mooring system of the floating cage of the present invention;

[0035] Figure 3 It is a top view schematic diagram of the working tug of the present invention performing the connection operation of the first mooring chain;

[0036] Figure 4 For Figure 3 An enlarged view of A in

[0037] Figure 5 It is a top view schematic diagram of the floating crane of the present invention towing the tensioning steel wire through and then towing it to the deck of the working tug for connection;

[0038] Figure 6 For Figure 5 An enlarged view of B in

[0039] Figure 7 For Figure 5 An enlarged view of C in

[0040] Figure 8 Side schematic view of towing the free end of the nylon cable to the connecting eyebolt A of the floating cage for connection in the present invention;

[0041] Figure 9 is Figure 8 Enlarged view of D in;

[0042] Figure 10 Top view schematic of installing four mooring chains on the floating cage of the present invention.

[0043] In the figure, 1. floating crane ship; 2. main crane; 3. cable car; 4. tensioning winch; 5. tensioning wire; 6. tensiometer; 7. towing tugboat; 8. working tugboat; 9. main drum winch A; 10. auxiliary drum winch; 11. shark clamp; 12. floating cage; 13. connecting eyebolt A; 14. temporary working platform; 15. mooring point; 16. guide pulley; 17. temporary lifting point; 18. chain block; 19. large holding power anchor; 20. anchor chain; 21. nylon cable; 22. buoy; 23. triangular plate; 24. stay wire; 25. main drum winch B; 26. root; 27. free end connecting eyebolt B. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Please refer to Figures 1-10 As shown, the present invention is a floating cage mooring device with reserved catenary tension, including a floating crane ship 1, a towing tugboat 7, a working tugboat 8, a floating cage 12 and a mooring system. The mooring system includes four mooring chains. The towing tugboat 7 is used to tow the floating cage 12, and the towing tugboat 7 is combined with the floating crane ship 1 to stably tow the floating cage 12 (as Figure 1 shown), and the working tugboat 8 is used for the connection of the mooring chain and the adjustment of the positions of the floating cage 12 and the floating crane ship 1.

[0046] As Figure 10 shown, guide pulleys 16 are provided below both ends of one side of the floating cage 12 close to the floating crane ship 1. Connecting eyebolt As 13 and mooring points 15 are provided around the floating cage 12, and the guide pulleys 16 are located above the connecting eyebolt As 13.

[0047] A temporary working platform 14 is provided below the connecting eye plate armor 13. The temporary working platform 14 is located at both ends of the floating cage 12 close to the floating crane ship 1. The temporary working platform 14 is used for operators to stand and operate the chain block 18 to complete the connection of the nylon cable 21 and the connecting eye plate armor 13.

[0048] As Figure 2 , Figure 8 and Figure 9 shown, the mooring system includes a triangular plate 23. Anchor chains 20, nylon cables 21 and buoys 22 are respectively provided on the three connecting eyes of the triangular plate 23. One end of the anchor chain 20 is connected to the triangular plate 23, and a large grappling anchor 19 is provided at the other end.

[0049] A temporary lifting point 17 is provided above the guide pulley 16. A chain block 18 is provided on the temporary lifting point 17. One end of the nylon cable 21 is connected to the triangular plate 23, and a free end connecting eye B 27 is provided at the other end. A root part 26 for connecting with the chain block 18 is provided on the free end connecting eye B 27. The temporary lifting points 17 can be several, all located on the side close to the floating crane ship 1. The chain block 18 can be switched among several temporary lifting points 17 according to the operation needs. The chain block 18 is used to tow the root part 26 of the nylon cable 21 so that the free end connecting eye B 27 is connected to the connecting eye plate armor 13 of the floating cage 12.

[0050] As Figures 5-7 shown, a workboat and a main hoist 2 are provided on the floating crane ship 1. Cable cars 3 and tension winches 4 are provided on both sides of the main hoist 2. A tensiometer 6 is provided on the tension winch 4. One end of a tension wire 5 is connected to the tensiometer 6, and the other end of the tension wire 5 is detachably connected to the anchor chain 20 close to one end of the triangular plate 23 through the guide pulley 16. The cable car 3 is connected to the mooring point 15 through a mooring wire 24.

[0051] As Figures 3-4 shown, a main drum winch A 9, an auxiliary drum winch 10 and a shark clamp 11 are provided on the working tugboat 8. The shark clamp 11 is used for temporarily fixing the anchor chain 20 and the nylon cable 21.

[0052] A main drum winch B 25 is provided on the towing tugboat 7.

[0053] For the four nylon cables 21, two of them are connected to the connecting eye plate armor 13 of the floating cage 12 in advance and are connected to the cable on the main drum winch B 25 of the towing tugboat 7 during the towing process, and the other two nylon cables 21 are temporarily placed on the deck of the working tugboat 8.

[0054] A mooring process for a floating cage with reserved catenary tension includes the following steps:

[0055] Step 1: The floating crane 1 is positioned near the designed installation position of the floating cage 12, the towing tugboat 7 drags the floating cage 12 to the installation position, and the operating tugboat 8 drives the floating cage 12 to slowly approach the floating crane 1;

[0056] Step 2: The floating crane 1 sends a working boat to sequentially connect the cable points 15 of the floating cage 12 with the two cable cars 3 on the floating crane 1 to complete the cable connection, and the towing tugboat 7 and the floating crane 1 jointly control the floating cage 12 to be stable;

[0057] Step 3: The operating tugboat 8 picks up one of the two anchor chains 20 away from the floating crane 1 as the terminal of the first laid anchor chain 20, connects it to the main drum winch A 9 through a steel wire rope, and disconnects the corresponding nylon cable 21 on the eye plate A 13 from the main drum winch B 25 on the towing tugboat 7, and connects the disconnected nylon cable 21 to the auxiliary drum winch 10;

[0058] Step 4: The operating tugboat 8 simultaneously tightens the main drum winch A 9 and the auxiliary drum winch 10, pulls the ends of the anchor chain 20 and the nylon cable 21 to the deck, and temporarily fixes them with the shark clamp 11, and respectively connects the anchor chain 20, the nylon cable 21, the buoy 22 and the triangle plate 23; after the connection is completed, the shark clamp 11 is released, and the triangle plate 23 and the buoy 22 fall into the sea under the traction of the gravity of the anchor chain 20, and the first set of mooring chain connection is completed;

[0059] Step 5: The operating tugboat 8 picks up the other of the two anchor chains 20 away from the floating crane 1 as the terminal of the second laid anchor chain 20, and repeats steps 3 and 4 to complete the connection of the second set of mooring chains;

[0060] Step 6: The operating tugboat 8 picks up one of the two anchor chains 20 near the floating crane 1 as the terminal of the third anchor chain 20 that has been laid. The operating tugboat 8 picks up the terminal of the third anchor chain 20 and collects it on the deck, and respectively connects the anchor chain 20, the nylon cable 21, the buoy 22 and the triangle plate 23, wherein the other end of the nylon cable 21 is a free end connected to the eye 27, and then the operating tugboat 8 approaches the floating crane 1 and waits;

[0061] Step 7: The main crane 2 of the floating crane 1 lifts the tension wire 5, passes the tension wire 5 through the guide wheel 16 on the floating cage 12, and pulls the passed end to the deck of the working tugboat 8, and connects it to the chain link near the terminal of the anchor chain 20 through the shackle. After the end connected to the main crane 2 is pulled back to the deck of the floating crane 1, the tension meter 6 and the tension winch 4 are connected in sequence through the shackle;

[0062] Step 8: The tension winch 4 of the floating crane vessel 1 tightens to drive the tension wire 5, and judges whether the reserved tension force meets the installation design requirements according to the value displayed by the tensiometer 6. Under the action of the guide pulley 16, the tension wire 5 pulls the anchor chain 20, nylon cable 21, buoy 22 and triangular plate 23 that have been connected to the deck of the working tugboat 8 to the vicinity of the corresponding connection eyeplate A 13 of the floating cage 12;

[0063] Step 9: The operator lands on the temporary working platform 14 at the corresponding position, and uses the chain block 18 to pull the free end connection eye B 27 of the nylon cable 21 to the vicinity of the corresponding connection eyeplate A 13 of the floating cage 12, and completes the connection between the free end connection eye B 27 and the connection eyeplate A 13;

[0064] Step 10: The tension winch 4 of the floating crane vessel 1 relaxes. After the tension force is removed from the anchor chain 20, the anchor chain 20 drives the nylon cable 21 to be straightened again, and there is a remaining catenary tension. This remaining catenary tension is the required catenary tension value after the installation of the floating cage 12 is completed;

[0065] Step 11: Disconnect and recover the tension wire 5 from the anchor chain 20. So far, the connection of the third mooring chain is completed;

[0066] Step 12: The working tugboat 8 picks up the other one of the two anchor chains 20 close to the floating crane vessel 1 as the terminal of the fourth laid anchor chain 20, and repeats Steps 6 to 11 to complete the connection of the fourth mooring chain.

[0067] Compared with the traditional process of connecting the anchor chain 20 in the relaxed state by the tugboat, the present invention can ensure that the mooring chain after connection has a certain catenary tension and can guarantee the stability after the installation of the cage by connecting the nylon cable 21 and the connection eyeplate A 13 of the floating cage 12 by pulling the anchor chain 20 with the tension wire 5. By mooring the floating cage 12 and the floating crane vessel 1 and controlling with the towing tugboat 7, the position of the floating cage 12 is stabilized, greatly improving the safety of the construction operation.

[0068] After the towing tugboat 7 of the present invention towes the floating fish cage 12 to the site, it is moored stably with the floating crane ship 1 by cables. The working tugboat 8 successively picks up the terminals of two anchor chains 20 far away from the floating crane ship 1 and connects them to the nylon cables 21 on the floating fish cage 12 respectively. The floating crane ship 1 hoists and tensions the steel wire 5 to pass through the guide wheel 16 of the floating fish cage 12. One end is connected to the tensioning winch 4, and the other end is connected to the terminal link of the third anchor chain 20 picked up by the working tugboat 8. At the same time, the connection of the anchor chain 20 and the nylon cable 21 is completed in advance on the deck of the working tugboat 8. Subsequently, the tensioning winch 4 tightens, and under the action of the guide wheel 16 of the floating fish cage 12, the terminal of the anchor chain 20 is towed to near the connecting eye plate A 13. The free end connecting eye B 27 of the nylon cable 21 is pulled up by the chain block 18 to complete the connection with the connecting eye plate A 13, and the installation of the fourth mooring chain is completed by the same process. This process enables the floating fish cage 12 to have sufficient catenary tension after mooring, greatly improving the stability of the floating fish cage 12 after installation.

[0069] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0070] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A floating cage mooring process with reserved catenary tension, the mooring device comprising a floating crane (1), a towing tugboat (7), an operating tugboat (8), a floating cage (12) and a mooring system, the mooring system comprising four sets of mooring chains, the mooring system comprising a triangular plate (23), three connecting eyes of the triangular plate (23) are respectively provided with an anchor chain (20), a nylon cable (21) and a buoy (22), one end of the anchor chain (20) is connected to the triangular plate (23), and the other end is provided with a large holding power anchor (19), one end of the nylon cable (21) is connected to the triangular plate (23), and the other end is provided with a free end connecting eye B (27); the floating cage (12) is provided with guide wheels (16) at both ends below the side close to the floating crane (1), the floating cage (12) is provided with a guide wheel (16) at both ends below the side close to the floating crane (1), the floating cage (12) is provided with a guide wheel (16) at both ends below the side close to the floating crane (1), the floating cage (12) is provided with a guide wheel (16) at both ends below the floating cage ... The cage (12) is provided with connecting eye plates (13) and cable points (15) on all sides, and the guide wheel (16) is located above the connecting eye plates (13); the floating crane (1) is provided with a working boat and a main crane (2), and both sides of the main crane (2) are provided with a cable car (3) and a tension winch (4), and the tension winch (4) is provided with a tension meter (6), and the tension meter (6) is connected to one end of a tension wire (5), and the other end of the tension wire (5) is detachably connected to an anchor chain (20) near one end of a triangle plate (23) via a guide wheel (16); the towing tugboat (7) is provided with a main drum winch B (25); the working tugboat (8) is provided with a main drum winch A (9), an auxiliary drum winch (10) and a shark clamp (11); It is characterized in that The floating cage mooring process with reserved catenary tension includes: Step 1: The floating crane (1) is positioned near the designed installation position of the floating cage (12), the towing tugboat (7) tows the floating cage (12) to the installation position, and the operating tugboat (8) drives the floating cage (12) slowly approaching the floating crane (1); Step 2: The floating crane (1) sends a working boat to sequentially connect the cable points (15) of the floating cage (12) to the two cable cars (3) on the floating crane (1) to complete the cable connection, and the towing tugboat (7) and the floating crane (1) jointly control the floating cage (12) to stabilize it; Step 3: The operating tugboat (8) picks up one of the two anchor chains (20) away from the floating crane (1) as the terminal of the first laid anchor chain (20), connects it to the main drum winch A (9) through a steel wire rope, and disconnects the corresponding nylon cable (21) on the eye plate A (13) from the main drum winch B (25) on the towing tugboat (7), and connects the disconnected nylon cable (21) to the auxiliary drum winch (10); Step 4: The operating tugboat (8) simultaneously tightens the main drum winch A (9) and the auxiliary drum winch (10), pulls the ends of the anchor chain (20) and the nylon cable (21) to the deck, and temporarily fixes them with the shark clamp (11), and respectively connects the anchor chain (20), the nylon cable (21), the buoy (22) and the triangular plate (23); after the connection is completed, the shark clamp (11) is released, and the triangular plate (23) and the buoy (22) fall into the sea under the traction of the anchor chain (20), and the connection of the first set of mooring chains is completed; Step 5: The operating tugboat (8) picks up the other of the two anchor chains (20) away from the floating crane (1) as the terminal of the second laid anchor chain (20), and repeats steps 3 and 4 to complete the connection of the second set of mooring chains; Step 6: The operating tugboat (8) picks up one of the two anchor chains (20) near the floating crane (1) as the terminal of the third anchor chain (20) that has been laid. The operating tugboat (8) picks up the terminal of the third anchor chain (20) and collects it on the deck. The anchor chain (20), the nylon cable (21), the buoy (22) and the triangle plate (23) are connected respectively. The other end of the nylon cable (21) is a free end connected to the eyelet (27). Then the operating tugboat (8) approaches the floating crane (1) and waits for orders. Step 7: The main crane (2) of the floating crane (1) lifts the tensioning wire (5), passes the tensioning wire (5) through the guide wheel (16) on the floating cage (12), and tows the passed end to the deck of the operating tugboat (8), connects it to the chain link near the terminal of the anchor chain (20) through a shackle, and tows the end connected to the main crane (2) back to the deck of the floating crane (1), and then connects the tension meter (6) and the tension winch (4) in sequence through the shackle; Step 8: The tensioning winch (4) of the floating crane (1) is tightened to drive the tensioning wire (5), and the value displayed by the tension meter (6) is used to determine whether the reserved tensioning force meets the installation design requirements. Under the action of the guide wheel (16), the tensioning wire (5) pulls the anchor chain (20), nylon cable (21), buoy (22) and triangle plate (23) connected to the deck of the operating tugboat (8) to the vicinity of the corresponding connection eye plate armor (13) of the floating cage (12); Step 9: The operator lands on the temporary operation platform (14) at the corresponding position, and uses the hand winch (18) to pull the free end connection eye B (27) of the nylon cable (21) to the vicinity of the corresponding connection eye plate A (13) of the floating cage (12), and completes the connection between the free end connection eye B (27) and the connection eye plate A (13); Step 10: The tension winch (4) of the floating crane (1) is relaxed, and the anchor chain (20) drives the nylon cable (21) to straighten again after the tension is removed, and a portion of the catenary tension remains, and the remaining catenary tension is the catenary tension value required after the floating cage (12) is installed; Step 11: disconnect the tensioning wire (5) from the anchor chain (20) and recycle them. At this point, the third set of mooring chain connection is completed. Step 12: The operating tugboat (8) picks up the other of the two anchor chains (20) close to the floating crane (1) as the terminal of the fourth laid anchor chain (20), and repeats steps 6 to 11 to complete the connection of the fourth set of mooring chains.

2. A floating cage mooring process with reserved catenary tension according to claim 1, characterized in that: The temporary operating platform (14) is provided below the connecting eye plate armor (13), and the temporary operating platform (14) is located at both ends of a side of the floating cage (12) close to the floating crane (1).

3. A floating cage mooring process with reserved catenary tension according to claim 1, characterized in that: A temporary hanging point (17) is provided above the guide wheel (16), a hand chain hoist (18) is provided on the temporary hanging point (17), and a root (26) for connecting to the hand chain hoist (18) is provided on the free end connecting eye (27).

4. The floating cage mooring process with reserved catenary tension according to claim 1, characterized in that: The cable car (3) is connected to the cable point (15) via a cable-stayed steel wire (24).

5. The floating cage mooring process with reserved catenary tension according to claim 1, characterized in that: The towing tugboat (7) is used for towing a floating net cage (12); the towing tugboat (7) is combined with a floating crane (1) to stably tow the floating net cage (12).

6. The floating cage mooring process with reserved catenary tension according to claim 1, characterized in that: The operating tugboat (8) is used for connecting the mooring chain and for adjusting the position of the floating cage (12) and the floating crane (1).

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